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More ways to get Braingle...

-2, 4, -12, 48, -240, ...

Series teasers are where you try to complete the sequence of a series of letters, numbers or objects.

 

Puzzle ID:#277
Fun:*** (2.3)
Difficulty:** (1.9)
Category:Series
Submitted By:jerry1***

 

 

 



-2, 4, -12, 48, -240, ...
What is the next number in the above series?


Answer

1440. The first number is multiplied by a negative 2, the second by a negative 3, the third by a negative 4 and so on.
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